Sliding inside shutter or blind.



No. 333,563, PATENTED 001113, 1303. E. STRATTA.

SLIDING INSIDE SHUTTER OR BLIND.

APPLICATION FILED APR. 3. 1903.

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PATENTED OCT. 16

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SLIDING INSIDE SHUTTER 0R BLIND.

APPLIOATION FILED APR. 3. 1906.

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ERNESTO STRATTA, OF TURIN, ITALY.

SLIDING INSIDE SHUTTER OR BLIND.

Specification of LettersPatent.

Patented 0a. 16, 1906.

Application filed April 3, 1906- $eria1No. 309,727.

To all whom it may concern:

Be it known that I, ERNESTO STRATTA, a subject of the King of Italy, residing in Turin, Italy, have invented certain new and useful Improvements in Sliding Inside Shutters or Blinds, of which the following is a specification.

This invention relates to inside blinds or shutters for windows which are adapted to be displaced by sliding them laterally in guideways; and the object of the invention is to mount the blinds in a simple manner so that they may be operated conveniently by any one inside of the room and be automatically latched and unlatched.

In the accompanying drawings, which serve to illustrate an embodiment of the invention, Figure 1 is a front elevation of the device, the woodwork being omitted in order to expose the operative mechanism. Figs. 2 and 3 are sectional details, on a larger scale than Fig. 1, taken, respectively, at the points indicated by lines 06 and x in Fig. 1. Fig. 4 is an enlarged cross-section at 00 in- Fig. 1. Fig. 5 is a plan view of the o erative mechanism, some of the woodwor being omitted. Fig. 6 is an enlarged plan view of the rackbar and the slot therein. Fi 7 is an enlarged sectional detail of the rdllers, taken at line :0 in Fig. 1.

W designates in general a window or window-opening; L, the lintel of the same; S, the sill, and B B the two shutters or inside blinds, which are adapted to slide laterally edgewise for opening and closing. At the bottom of each shutter are two rollers 1, which are mounted on ball-bearings and roll on a trackrail 2 on the window-sill. One of the rollers 1 is seen in detail in Fi 7. At the top each shutter has a pair of rol ers 3 on upright axes, the rollers of each pair embracing and rolling on the lateral faces of a track 4, secured to the lintel L, as seen Fig. 2.

Mounted on the top of the shutter at the left (in Fig. 1) is a rack-bar 5, with upright teeth, and mounted on the shutter at the right is a rack-bar 6, which is inverted. Between these racks and gearing with them, respectively, above and below is a pinion 7 and an arbor 8, mounted as indicated in Fig. 3. On the outer end of the arbor 8 is a wormwheel 9, which is in gear with a screw 10 on the armature-arbor of an electric motor M. This latter is indicated somewhat diagrammatically, and it may be of any kind. As here shown, the motor is carried by a bracket secured to the lintel or frame of the window, and the motor will be provided with the usual means for starting, stopping, and reversing.

From the above description it will be readily understood how the device operates. If the shutters be closed and the motor M be set in motion in the proper direction, the pinion 7, acting on the racks, will slide the shutters open, and when the motor is set in motion in the opposite direction the shutters are brought together or closed.

The rack-bars 5 and 6 are not fixed rigidly to the shutters,-but have a little sliding play, as will be explained, for operating the latch which automatically secures the shutters together when closed. The rack-bars have in them slots 11, as seen in Figs.5 and 6, to receive the securing-screws, and to the rackbar carried by the shutter at the left is attached awire 12, (or other flexible connector,) which passes over a sheave 13 on the shutter and thence down through a groove in the edge of the latter to a spring-latch14,mounted in a recess in the edge of the shutter and adapted to engage a catch 15 in the edge of the other shutter when the two-shutters are brought together edge to edge. When the motorMis set in motion to open the shutters, the rack-bar 5 draws on the wire and raises the latch 14, thus freeing the shutters, and they then open. When they are brought together, the latch wipes over and engages the catch 15.

Obviously any power may be employed for o crating the shutters. The electric motor s own is not essential.

Having thus described my invention, I claim- 1. The combination, with a pair of slidablymounted inside shutters, of the racks 5 and 6 mounted on the respective shutters, said racks having each a limited sliding movement which is independent of the shutter, a rotative pinion in gear at its opposite sides with the respective racks, means for rotating said pinion for moving the shutters, through the medium of the racks, in opposite directions simultaneously, a spring-latch on one of said shutters, a catch to be engaged by the latch, and a flexible connector secured at one end to the latch and at the other end to the rack on the shutter bearing the latch.

2. The combination with a pair of slidablymounted inside shutters, one provided with a spring-latch 14:, and the other with a catch 15 to be engaged by said latch, of a rack 5 on that shutterwhich is provided With the latch, tric motor, and a screw on the arbor of said 10 the rack 6, on the shutter provided with the motor and in gear with said Worm-Wheel.

catch, said racks having a limited endwis'e- In Witness whereof I have hereunto signed sliding movement on the respective shutters, my name, this 17th day of March, 1906 in the a flexible connector 12, attached at one end presence of tWo subscribing Witnesses.

to the latch and at theother end to the rack ERNESTO STRATTA. 5, a pinion 7, gearing at its opposite sides Witnesses: with the respective racks, the arbor of said GoTTARDo O. PIRoNI,

pinion, a Worm-Wheel 9 on said arbor, an elec- SECONDO TORTA. 

